WPF OpenCVSharp4 maximize window and adjust image proportionally

Install-Package OpenCVSharp4
Install-Package OpenCVSharp4.runtime.win

using System.IO;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using OpenCvSharp;
using Rect = OpenCvSharp.Rect;
using Window = System.Windows.Window;namespace WpfApp52
{/// <summary>/// Interaction logic for MainWindow.xaml/// </summary>public partial class MainWindow : Window{public MainWindow(){InitializeComponent();this.Visibility = Visibility.Hidden; var imgs = Directory.GetFiles(@"../../../Images");foreach(var imgFile in imgs){OpenCVShowImg(imgFile);}Cv2.DestroyAllWindows();}void OpenCVShowImg(string imgUrl){Mat mat = Cv2.ImRead(imgUrl, ImreadModes.Color);if(mat==null ||mat.Empty()){MessageBox.Show($"Read {imgUrl} failed!");return;}string winName = "image";Cv2.NamedWindow(winName, WindowFlags.GuiExpanded );Cv2.SetWindowProperty(winName, WindowPropertyFlags.Fullscreen, (double)WindowFlags.FullScreen);Rect winRect= Cv2.GetWindowImageRect(winName);int winWidth = winRect.Width;int winHeight = winRect.Height;double scaleX = (double)winHeight / mat.Cols;double scaleY = (double)winHeight / mat.Rows;double scale = Math.Min(scaleX, scaleY);Mat resizeMat = new Mat();Cv2.Resize(mat, resizeMat, new OpenCvSharp.Size(0, 0), scaleX, scaleY, InterpolationFlags.Area);Cv2.ImShow(winName, resizeMat);Cv2.WaitKey(0);mat.Release();resizeMat.Release();     }}
}